I like Delta, the staff is nice, and generally my experiences have been fine. They are upgrading their stock (seat back videos in cabin class, etc.) but in general, they get you where you’re going more or less on time, leaving aside the Southern thunderstorm factor.
As for airline security, the thing to do is register Muslims. They are the only problem and they are the reason we and the rest of the world have had to completely revamp everything in airline travel.
Register them and check them. And if somebody does not declare the fact that he is a Muslim and this is discovered later (before he attempts to blow up the plane, that is), he should be subject to a penalty.
I was once denied boarding at DCA 35 minutes before flight time on a 737 with 3 empty seats in B and 19 in Y, because as the gate agent later told her supervisor, “I didn’t want to redo my weight and balance for a big Honky!”
I’m not kidding, and I was Medallion Gold at the time.